I would suggest that the likelihood of developing breed associated diseases would be reduced in an outbred animal. After all, it is widening the gene pool, and the chance of developing all of the diseases of the parent breeds is possible but small, since the defective gene of one breed is likely to be silenced by the other. It's got to be better than conserving the bad genes in a purebred line, surely?
On the audition itself - I was so desperate to see a dog act when I went to watch the London auditions, but never saw one! I would have loved to have seen Pudsey live. He clearly loves what he does, and has a very devoted and mature owner. I'll be voting for them!
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